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(No Model.) 4 Sheets-Sheet l.

P. BROTHERHOOD.

APPARATUS FOR DREDGING, ORUSHING, AND WASHING PHOSPHATE ROGK.

No. 298,443. Patented May 18, 1884.

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191/ his .Hzforney/s (No Model.) 4 SheetsSheet 2.

P. BROTHERHOOD.

APPARATUS FOR DREDGING, GRUSHING, AND WASHING PHOSPHATE ROGK. No.298,448. Patented May 13, 1884.

WITNESSES Y INVENTOR (No Model.) 4 Sheets-Sheet 3.

F. BROTHERHOOD.

APPARATUS FOR DREDGING. CRUSHING, AND WASHING PHOSPHATE ROCK.

No. 298,443. Patented May 13, 1884.

WITNESSES INVENTOR %29 w 7 Fred BroZf/ver/wow Lg 72/019 Attorneys a4.:WWM,@

N. PETERS Pvwto-uma n xm, Walhinglon, n. c.

(No Model.) 4 Sheets-Sheet 4.

P. BROTHERHOOD.

APPARATUS FOR DREDGING, ORUSHING, AND WASHING PHOSPHATE ROCK.

No. 298,443. Patented May 13. 1884.

WITNESSES INVENTOR By 72 is .dttomeys N4 PETERS Pnnwumo nimer.Washington. a

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FRED BROTHEBHOOD, OF CHARLESTON, SOUTH CAROLINA.

APPARATUS FOR DREDGING, CRUSHING, AND WASHlNG PHOSPHATE-ROCK.

SPECIFICATION forming part of Letters Patent No. 298,443, dated May 13,1884.

Application filed January J3, 188 i. No model.)

To all, whom it may concern.-

Be it known that I, FRED BROTHERHOOD,

of Charleston, in the State of South Carolina,

siderable economy in time, labor, and expense,

as compared with the means heretofore usually employed for this purpose.

It has been customary in securing phosphaterockto provide a vessel orhull for the dredging apparatus and another for the crushing and washingapparatus, thus requiring, in addition to the cost of the second hulland its extra mechanism and attendants, the further cost of handling thematerial in delivering it from the first to the second hull. Now, inaccordance with my invention, I dispense with the second hull, byproviding upon one. hull (the dredger-hull) all the mechanism requiredto secure the material, deliver it to the crush ing apparatus, crush it,deliver it to washing apparatus, wash it, and deliver it into scows orlighters at the side or sides of the dredger.

The novel organization of mechanism constituting myimprovements-hereinafter particularlydesignated by the clain1issufficiently shown in the accompanying drawings, in which- Figure l is aside elevation of a portion of the apparatus. Fig. 1 is a similar viewof the remainder of the apparatus. Fig. 2 is a view partly in frontelevation and partly in Fig. 3 is a detailed sectional view of thecrusher, the conveyer by which the material passes thereto, and thedischarge-conveyer by which the material is directed to the washers; andFig. 4 shows the same devices in section on the line 4 4 of Fig. 3. Fig.5 is a plan view, showing details of the connections between theengine-shaft and mechanism actuated thereby.

The vessel or hull A and its dredging appliances (the endless chain ofbuckets B, &c., by which to excavate and elevate the material) are ofany suitable and well-known construction, preferably such, as regardsgeneral features, as set forth in United States Letters Patent No.285,565, granted to me September 25, 1883, the chain or dredging bucketsbeing driven by connection with the engine-shaft, consisting of gears bb on the bucket-driving shaft a, actuated by pinions b b on theengine-shaft. The bucket-well or longitudinal channel-way 0 (representedin Figs. 1 and 1" by dotted lines) in the hull is extended by means ofthe incline c at rear, so that the refuse material discharged from thewashing apparatus is directed into it without interfering with thepreferred location of the devices for imparting motion to thewashing-cylinders, as soon to be explained. The material, as eX- cavatedand elevated by the buckets, is delivered to a suitable conveyer, (shownas formed by a vertical chute, 1),) by which it passes to crushing-rollsE, where the larger pieces of rock are reduced to proper size forwashing; and from the crusher the material passes by way of a forkedconveyor or channel, F, to the lower ends of the inclined cylinders G Gof the washing apparatus. Instead of the upright conveyer D, an inclinedconveyer may be employed by modifying the. arrangement shown, andthus'better opportunity may be given for readily removing foreignsubstancessuch as marl, &c.from the phosphate-rock on the way to thecrushers. Cutoffs (shown as formed by sliding gates ff) operated insuitable way, by hand or otherwise, provide for controlling the feed ofthe material, so that it may be directed from the crusher washers may beconsiderably varied, and full description of them is not required here.I prefer, however, to employ washers such as shown and described andclaimed in an application for Letters Patent of the United States filedby me simultaneously herewith.

The washing-cylinders, which are not herein claimed, as shown aresupported by means of wheels or rings 9 9 upon rollers h h, and

are rotated by connection with the engineshaft L in the following way:Bevel-gears I I, formed by rings secured about the cylinders, areactuated by bevel-pinions 13 i, secured to inclined shafts H H, whichshafts are rotated by means of bevel-gearsjj, meshing with a similargear, J, upon a shaft, K, actuated from the engine crank-shaft L bymeans of a bevelgear, M, on said shaft K, driven by a pinion, m, on thelower end of a shaft, N, having a pinion, a, at its upper end gearingwith a pinion, Z, on the shaft L.

The crushing-rolls are shown as driven by belt-and-pulley connectionswith the engineshaft, fixed upon the ends of which are pulleys O 0, fromwhich bands 0 0 pass to pulleys P P, fixed upon the ends of the shafts pp of the rolls. Suitable. spring-actuated bandtightening pulleys areemployed in connection with the bands 0. One of these tighteningpulleysis indicated at q, Fig. 1. In this way, in event of the clogging of thecrusher, the yielding of the tightening-pulleys permits the bands toslaclren, so that the crushing-rolls may stop to avoid injury to parts,as will readily be understood.

From the above description it will be seen that phosphate-rock, aselevated by the dredgebuckets and delivered to the conveyer D, passesfirst to the crusher and then to the forked conveyer, by which it isdelivered to one or to both of the washing-cylinders, up and along whichthe material is forced in well-known way, while streams of water,directed into the cylinders at their outer or upper ends, carry downtoward the lower end of the cylinders the mud, sand, &c., and dischargethis refuse into the channel at the inclined upper rear end, 0, thereof.The crushed and washed materiallis discharged from the outer ends of thewashing-cylinders into suitable scows or lighters at the sides of thedredging-vessel, thus leaving nothing to be done, except to carry thematerial to the ordinary drying apparatus and evaporate the surplusmoisture, preparatory to subjecting the material to the usual treatment,by which sulphuric acid is obtained from it.

I claim as of my own invention The combination of the endless chain ofdredging-buckets, the driving-shaftthereof, the engine-shaft, the gearson said drivingshaft actuated by pinions on the engine-shaft, thecrushing-rolls, the conveyer by which the material as excavated andelevated is delivered to said rolls, the belt-and-pulley connectionsbetween the crushing-rolls and the engine-shaft, the washing-cylinders,the gearing by which they are connected with and driven from theengine-shaft, and the conveyer by which the material is direeted'fromthe crushing-rolls to the washing-cylinders, all substantially as andfor the purpose hereinbefore set forth.

In testimony whereof I have hereunto subscribed my name this 5th day ofJanuary, A. D. 1884.

FRED BROTHERHOOD.

lVitnesses:

XV. G. DUVALL, EUGENE V. BROWN.

